Duplicating or stencil machine.



PATENTED MAY 12, 1903-;

I. JURIGIG. DUPLIGATING OR STENCIL MACHINE.

AI P LIOATION FILED AUG. 18, 1902.

2 SHEEN-SHEET 1.

110 MODEL.

1%. 727,636. PATENTED MAY 12,1903."

' I. JURIGI. v

DUPLIGATING 0R STENCIL MACHINE. APPLICATION FILED AUG. 16, 1902. noMODEL. I I z SHEETS-SEEM. 2.

429 v I Y I K Inventor.

Witnesses. V v

Atty.

THE mama PETERS co. PHoToLnNa. WASHINGTON nv c.

UNITED STATES Patented May 12, 1903.

PATENT OFFICE.

DUPLICATING OR STENCIL MACHINE SPECIFICATION forming part of LettersPatent No. 727,636, dated May 12, 1903.

Application filed August 18, 1992- Serial No. 120,151. (No modeLlwriting of the type in which the writing tobe reproduced consists ofperforations manually or mechanically made in wax-paper or otherconvenient material chemically or mechanically prepared for thispurpose, after which ink is pressed through the perforations of thewax-paper onto sheets of'paper introduced beneath thewax-paperstencil-sheet. While, however, in all machines hitherto usedeach copy necessitated at least two reciprocating motions of thewax-paper and upon the backward motion of the latter required theseparation of the printing and inking rollers in order to protect thesheet printed during its forward motion against defacement, the presentapparatus allows an impression to be obtained on eachforward-and-backward motion of the wax-paper. The copies are at the endof each forward-and-backward motion automatically removed from theapparatus, while in apparatus hitherto used the removal of the printedpaper had to be effected by hand, and thus caused loss of time.Moreover, the introduction of the paper into known machines-requires aconsiderable time,whereas in the present apparatus it is quicklyeffected, owing to the arrangement of convenient guides. Thus thepresent apparatus allows of a quicker working and in a more economicalmanner.

The invention consists, essentially, in the wax-paper or similar stencilbeing stretched and secured in an osci-llating frama-the oscillationbeing effected by therotation of a printing or impression roller, whichserves as a support for the paper sheets during the printing operation.This roller applies from an automatic feeding and grinding device theink, upon each forward-and-backward motion, to a coTrespondingly-guidedand automatically-drawn-in sheet of paper, which is afterfrom the rightof Fig.1. of the apparatus in inoperative position. Fig.

In the drawings, Figure 1 is a vertical section-of the apparatus inoperative position.

Fig. 2 is an elevation of the apparatus viewed Fig. 3 is a side view 4is a plan view of Figs. 1 and 2, and Figs. 5 to 13 show details.

.Upon a support 1, Figs. 1 to 4,are secured two standards 2, rigidlyconnected by cross-bars 3.

- Between the standards 2 is arranged an impression-roller 4, which canbe partly rotated by a hand-crank 5, keyed onto the end of the axle.Above the ro1ler4 and rotatably mounted in the standards 2 is aninking-roller 6, which receives the ink with the aid of an automaticfeeding or grinding device from rollers 7 8 9 10, arranged insuperposition. At an equal height with the uppermost inking-roller 10 isa square iron bar 11, freely rotatable in the standards 2, Fig. 1.Rigidly connected to or screwed to this bar 11 is'a wooden or other bar12, the inner projecting edge of which is hollowed to conform. totheshape of the roller.10. The bar 11 carries inits center a bracket orprojecting arm 13, through which extends a pivotpin 14, rigidlyconnected with the cross-bar3of the standards 2. On the pin 14, betweenthearm 13 and bar 3, is a spring 15, which bears at one end against thecross-bar 3 and with its other end against the arm 13 of the bar 11. The[outer end of the pin 14 is provided with a nut 16. As the cross-bar 3is fixed the bar 11 can, by turning the nut 16, be adjustedso that thebar 12 can be pressed toward or moved away from the roller 10. The inkis uniformly supplied to the space formed betweenethe bar-I11 and roller10 along the whole length of the apparatus, from which it is transmittedthrough the adjustable space between bar, '12 and roller 10 to thetransmitting-roller 9, arranged.

below. On the axis of the impression-roller 4 are eccentrics 17, (seeFigs. 5 and 6,) the upwardly-extending strap-rods 18 of which haveconvenient eyes 19, supporting the shaft of the roller 9, the ends ofwhich enter longitudinal slots 20 in the standards 2, Figs. 3 and 4.

.Upon rotating the roller 4 by the handcrank 5 the top ink-transmittingroller 9 is alternately raised and lowered by the eccentrics 17 and rods18, whereby the roller 9 is alternately brought in contact with theinking-roller 10 and the lower metallic grindingroller 8, and after afew rotations transmits the ink received from the roller 10 to thegrinding-roller 8,whereupon it moves upward again. The roller 8 isrotatable and is movable longitudinally between the standards 2, one endof its shaft being provided with coarse threads 21., which cooperatewith corresponding screw-threads provided in the standard 2. By thescrew motion thus obtained the roller 8 has a grinding action on the inkreceived and transmits it to the inking-rollers 7 and 6, arranged below,by which it is further distribnted.

In the upper part of the apparatus is rotatably arranged a rod 22,carrying downwardly and outwardly directed frames 23, mounted loosely,however, wit h a sufficient friction and adapted to receive at theirlower ends the perforated wax stencil carrying the writing or drawing tobe duplicated; One of the frames 23 is shown in detail in Figs. 12 and13 of the drawings. The frames 23 are connected byinwardly-projeotinglinks 24, the ends of which are drawn upward by a spiral spring 25. Thespiral spring 25 is carried by a vertical screw 26, which extendsthrough an opening in the rod 22 and can be adjusted by a screw-nut 27.The stencil is secured by suitable clamps which engage with resilienthooks 28 at the lower ends of the frames 23. These clamps are shown indetail in Figs. 7 to 11 and consist of two bars 29 and 30, between whichthe ends of the wax-paper are introduced. The bar 30 is of angularcross-section and is provided with holes 31 for receiving guide-pins 31on the bar 29. These bars carry spring locking devices 32, by means ofwhich both bars 29 and 30 can be strongly clamped together with thestencil in between, as shown in Fig. 9. Odsets 33 on the ends of the bar30 serve as a guide during the engagement with the resilient hooks 28 ofthe frame 23.

Tables 34, arranged for supporting and guiding the paper sheets to beprinted upon, are hinged between the standards, and in their operativeposition, Fig. 1, are secured by hinged braces or brackets 35, engagingwith pins 43 on the frames. In this position the tables are horizontaland at an equal height with the top of the impression-roller 4 andbottom of the inking-roller 6, between which the wax-paper secured tothe frames 23 and the paper to be printed upon is passed. The tables 34are provided with side guides 36, which can be adjusted to correspond tothe width of the paper sheets used in order to insure a regular feed.

The circumference of the impression-roller 4 is at 37 flattened, asshown in Fig. 1, in order to facilitate the introduction of the waxpapcrat the beginning of the operation. The

hand-crank 5 on the shaft of the roller 4 moves over an angularprojection on the standard 2, which is provided with an annular groove38. In this groove 38 are two adjustable pins 39, which can be fixed bynuts 40, which serve as locking means. Flexibly connected with one ofthe eccentric-rods 18 is a ratchetpawl 41, which engages with the teethof a ratchet-wheel 42, keyed onto the shaft of the ink-feeding roller10, which is thus intermittently turned during the working of theapparatus in order to bring fresh sections of the ink-charged roller 10opposite to the transmitting-roller 9 at the times when the rollers 9and 10 are out of contact.

When not in use, all parts of the apparatus are in the position shown inFig. 3. The frames 23 are folded down and in and the tables 34 areturned upward and inward. In order to prevent unnecessary contact of therollers 6, 7, and 9 with the rollers 4, 8, and 10, made of resistantmaterial, (wood, metal, or the like,) and consequently undue wear orflattening, the hand-crank 5 is at this time turned to the bottom withthe flattened face 37 of the printing-roller 4 at the top. The screwsconnecting the roller 7 with the standards are loosened, whereby theshaft of the roller 7 moves down in the lowermost part of the obliquesupport 44, Fig. 4, on the standards 2, so that the roller 7 is neitherin contact with the roller 8 nor with the roller 6, and finally theroller 9 is in consequence of the position of the crank 5 and eccentric17 neither in contact with the upper roller 10 nor with the lower roller8.

For working, the tables 34 are first of all placed horizontally, Fig. 1,and the brackets engaged with their fork-shaped ends over the pins 43 onthe standards 2. Upon raising the screw 26 by turning the nut 27 theframes 23 will be spread apart. The stencil-sheet is now passed betweenthe Hat portion 37 of the roller 4 and the roller 6. The clamps arewithdrawn from the hooks 28 of the frames 23 and opened, so as to allowof the introduction of the two ends of the stencil. The clamps, togetherwith the clamped stencil, are then introduced into the hooks 28 of theframe 23. By conformably turning the screw-nut 27 both frames 23 arestretched apart until the waxpaper is properly stretched, so as toreceive the shape shownin Fig. 1. Afterapplyingtheink to the channelbetween the bar 11 and roller 10 and upon suitably adjusting the bar 12opposite to the latter by turning the nut 16 the frames 23 are severaltimes oscillated by hand in order to cause a uniform distribution of-inkon the rollers 10 9 8 7 6 and on the stencil by the rotation of therollers, which is effected by their frictional engagement. As soon asthe ink is uniformly distributed on the stencil the nuts are loosenedand the crank 5, and with it the roller 4, is so turned that the fiatportion 37 of the roller comes opposite one end of the stencil. The

extreme positions of the crank can be limited by the adjustment of thescrew-nuts 40, so that if required the whole length of the stencil canbe brought in contact with the cylindrical portion of theimpression-roller 4 by the oscillation of the crank 5. The paper to beprinted upon and placed upon the tables 34 is, owing to the quickoscillation of the printing-roller 4, drawn in between the latter andthe stencil. The printed sheets fall automatically out of the apparatusbeneath the table opposite to that from which they are fed. It will thusbe seen that the printing can be quickly efiected with the describedapparatus, as the feeding as well as the arresting means allow of aneasy and quick introduction as well as removal of the papersheets,automatically effected in the present case without loss of time.Moreover, as the introduction of the paper can be efiected from bothsides of the apparatus each copy necessitates only a single motion ofthe crank, while the position of the stencil or the oscillation of theimpression-roller 4 between determined limits can be quickly effected. 7

What I claim, and desire to secure by Letters Patent of the UnitedStates, is

1. The combination, in a stenciling-machine, of an impression-roller forsupporting and carrying the sheet to be impressed, an inking-rollercoacting therewith, an oscilla-- tory frame comprising two overheadpivoted sections having means at their lower ends for connecting withthe ends of the stencil, means for spreading said lower ends apart tostretch the stencil between the impression-roller and the inking-roller,and means for rocking the impression-roller to oscillate said frame backand forth by frictional contact with the stencil.

2. In a stenciling-machine, the combination with an impression-rollerand an inkingroller driven frictionally thereby, of an oscillatingstencil-carrying frame comprising two sections hinged overhead withretaining devices at their lower ends to hold the ends of the stenciland adjustable, spring seated means for spreading said sections apart asto their lower ends, and for drawing them in.

3.- In astenciling-machine, a stencil-carrier comprising a frame havingtwo sections pivoted adjacent to each other and having hooks on theirfree ends, means for spreading said sections apart, two separable barsfitting into said hooks and receiving the ends of the stencil, andclamping devices for holding said bars upon the stencil.

4. In a stenciling-machine the combination of two side standards tiedtogether, an impression-roller journaled in the lower part of saidstandards, a vertical series of inkingrollers also j ournaled in saidstandards axially above the impression-roller, an oscillatorystencil-supporting frame comprising two sections pivoted adjacent to thetop of the standard and having holding devices forthestenoil at thelower end, means for spreading said sections apart and for closing themin between the standards, and tables hinged to the standards on eachside of the impression-roller and capable of being turned up and inbetween said standards upon their hinges.

5. In a stenciling-machine, the combina tion with means for feedingsheets to be impressed, of an inking-roller, and an'impression-rollerhaving a flattened surface.

' In testimony whereof I affix my signature in presence of twowitnesses. v v

IVO J URICIG.

Witnesses: I

PAUL JOSEPH DOMANIOZY, FRANZ RENQSCHEFSKY.

